Home / 13,251.70-18,283.89-8,542.90

Finding the Fourth Proportional to 13,251.70, 18,283.89 and 8,542.90

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Solution

The fourth proportional to 13,251.70, 18,283.89 and 8,542.90 is: 11,786.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.70 : 18,283.89 = 8,542.90 : x
  2. Step 2: Convert to fraction form
    13,251.70/18,283.89 = 8,542.90/x
  3. Step 3: Cross multiply
    13,251.70x = 18,283.89 × 8,542.90
  4. Step 4: Simplify right side
    13,251.70x = 156,197,443.88
  5. Step 5: Solve for x
    x = 156,197,443.88/13,251.70
  6. Step 6: Final answer
    x = 11,786.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.